I think what's being asked for is the "none of the above" option. When that is present, and people are particularly unhappy about all the candidates on the ballot, they can express it by picking the "none" options. If enough people are unhappy, that option draws votes away such that no candidate gets the requisite majority. There are several different approaches to resolving the election from there; for example, it could trigger a run-off election, in which the top two candidates may receive a different distribution of votes. And if the run-off sees "none" as the most popular option, it would indicate that neither candidate is acceptable to the populace, so election restarts without them in the play.